USB 16-bit AD/DA Converter Build a USB Soundcard for your Desk PC or Laptop

摘要

I have always been fascinated by computers interfacing to the real world. During the last years, all kinds of interfaces have popped up: serial (RS-232, RS-485, ...), parallel, different standards, several speeds, USB 1.0, 1.1, and 2.0, SATA, ... USB or 'Universal Serial Bus' gave an answer to some of the problems encountered like speed issues and bi-directional communication (ever tried to input data on a printer port?). This project describes the construction of a mini USB soundcard, which can be used to add a soundcard to your desktop PC or portable computer. Voice or sound recording is possible simultaneously, as well as hooking up external sound speakers for quality music playing or gaming. A very compact design (2" by 3") and low cost makes this an ideal project for the practical electronics hobbyist/professional. Just take this circuit, hook it up to a free USB port on a PC or a portable (without opening the case), attach a headphone, and start listening to your favorite CDs. It's as simple as that.